3649114640 has 40 divisors (see below), whose sum is σ = 8713501080. Its totient is φ = 1420194816.

The previous prime is 3649114627. The next prime is 3649114663. The reversal of 3649114640 is 464119463.

It can be written as a sum of positive squares in 4 ways, for example, as 847741456 + 2801373184 = 29116^2 + 52928^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3649114594 and 3649114603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613445 + ... + 619364.

It is an arithmetic number, because the mean of its divisors is an integer number (217837527).

Almost surely, 2^3649114640 is an apocalyptic number.

It is an amenable number.

3649114640 is an abundant number, since it is smaller than the sum of its proper divisors (5064386440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3649114640 is a wasteful number, since it uses less digits than its factorization.

3649114640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232859 (or 1232853 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 3649114640 is about 60407.9021320886. The cubic root of 3649114640 is about 1539.5572235806.

The spelling of 3649114640 in words is "three billion, six hundred forty-nine million, one hundred fourteen thousand, six hundred forty".